@shopware-ag/meteor-component-library/dist/esm/MtPriorityPlusNavigation.js

The meteor component library is a Vue component library developed by Shopware. It is based on the [Meteor Design System](https://shopware.design/).

import { defineComponent, renderSlot } from "vue";
import { _ as _export_sfc } from "../_plugin-vue_export-helper-cc2b3d55.mjs";
function getWidth(el) {
  if (!el) {
    return 0;
  }
  const styles = window.getComputedStyle(el);
  const margin = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
  return Math.ceil(el.offsetWidth + margin);
}
const _sfc_main = defineComponent({
  name: "PriorityPlusMenu",
  props: {
    /**
     * The list of navigation items to display.
     */
    list: {
      type: Array,
      required: true,
      default() {
        return [];
      }
    },
    /**
     * The offset factor is used to multiply the width of the last visible item for the more button offset.
     */
    offsetFactor: {
      type: Number,
      default: 1.5
    },
    /**
     * The property used to identify the items in the list.
     */
    identifier: {
      type: String,
      required: false,
      default: "name"
    }
  },
  data() {
    return {
      /**
       * The accumulated widths of the items in the list.
       * For example take this list for items with a widht of 100px each:
       * [100, 200, 300, 400, 500]
       *
       * This list is used to search the last item index which fits into the container width.
       */
      accumItemWidths: [],
      /**
       * This list contains the identifiers of the items which are hidden.
       * The values respect the prop `identifier`.
       */
      hiddenItemIdentifiers: []
    };
  },
  computed: {
    /**
     * The items which are currently displayed.
     */
    mainItems() {
      return this.list.filter((item) => !this.hiddenItemIdentifiers.includes(item.name));
    },
    /**
     * The items which are currently hidden.
     */
    moreItems() {
      return this.list.filter((item) => this.hiddenItemIdentifiers.includes(item.name));
    },
    hasHiddenItems() {
      return !!this.moreItems.length;
    },
    /**
     * The HTML elements of the visible items.
     */
    visibleElements() {
      const els = {};
      this.list.forEach((item) => {
        if (this.hiddenItemIdentifiers.includes(item[this.identifier])) {
          return;
        }
        const el = this.$el.parentElement.querySelector(
          `[data-priority-plus="${item[this.identifier]}"]`
        );
        if (!el) {
          return;
        }
        els[item[this.identifier]] = el;
      });
      return els;
    },
    /**
     * The last visible HTML element.
     */
    lastVisibleElement() {
      const keys = Object.keys(this.visibleElements);
      const lastKey = keys[keys.length - 1];
      return this.visibleElements[lastKey];
    }
  },
  async mounted() {
    await this.$nextTick();
    this.storeItemWidths();
    this.handleResize();
    this.handleResize();
    window.addEventListener("resize", this.handleResize);
  },
  watch: {
    /**
     * Watch the list for changes and recalculate the item widths.
     * This is necessary if the list changes after the component is mounted.
     */
    list: {
      handler() {
        this.handleResize();
      },
      deep: true
    }
  },
  beforeUnmount() {
    window.removeEventListener("resize", this.handleResize);
  },
  methods: {
    storeItemWidths() {
      let sum = 0;
      this.list.forEach((item, index) => {
        sum += getWidth(this.visibleElements[item[this.identifier]]);
        this.accumItemWidths[index] = sum;
      });
    },
    getContainerWidth() {
      var _a, _b;
      let offset = 0;
      if (this.hasHiddenItems) {
        const firstVisibleElement = Object.values(this.visibleElements)[0];
        offset = getWidth(firstVisibleElement) * this.offsetFactor;
      }
      return ((_b = (_a = this.$el) == null ? void 0 : _a.nextSibling) == null ? void 0 : _b.offsetWidth) - offset;
    },
    getLastVisibleItemIndex() {
      let index = 0;
      const containerWidth = this.getContainerWidth();
      while (index < this.accumItemWidths.length) {
        if (this.accumItemWidths[index] > containerWidth) {
          index--;
          break;
        }
        index++;
      }
      return index;
    },
    async handleResize() {
      await this.$nextTick();
      const lastVisibleItemIndex = this.getLastVisibleItemIndex();
      this.hiddenItemIdentifiers = [];
      this.list.forEach((item, index) => {
        const hidden = index > lastVisibleItemIndex;
        if (!hidden) {
          this.hiddenItemIdentifiers = this.hiddenItemIdentifiers.filter((id) => id !== item.name);
          return;
        }
        this.hiddenItemIdentifiers.push(item.name);
      });
    }
  }
});
function _sfc_render(_ctx, _cache, $props, $setup, $data, $options) {
  return renderSlot(_ctx.$slots, "default", {
    mainItems: _ctx.mainItems,
    moreItems: _ctx.moreItems
  });
}
const PriorityPlus = /* @__PURE__ */ _export_sfc(_sfc_main, [["render", _sfc_render]]);
export {
  PriorityPlus as default
};
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